/*
 * Copyright (c) 2011-2014 Pivotal Software, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.camunda.bpm.extension.reactor.projectreactor.io.codec;

import org.camunda.bpm.extension.reactor.projectreactor.io.buffer.Buffer;

import java.util.function.Consumer;
import java.util.function.Function;

/**
 * A simple {@link Codec} implementation that turns a {@link Buffer} into a {@code byte[]} and
 * visa-versa.
 *
 * @author Jon Brisbin
 * @author Stephane Maldini
 */
public class ByteArrayCodec extends BufferCodec<byte[], byte[]> {

  @Override
  public Function<Buffer, byte[]> decoder(final Consumer<byte[]> next) {
    return new Function<Buffer, byte[]>() {
      @Override
      public byte[] apply(Buffer buffer) {
        byte[] bytes = buffer.asBytes();
        buffer.skip(bytes.length);
        if (null != next) {
          next.accept(bytes);
          return null;
        } else {
          return bytes;
        }
      }
    };
  }

  @Override
  public Buffer apply(byte[] bytes) {
    return Buffer.wrap(bytes);
  }

}
